A sodium sulphate solution (created by the reaction between caustic soda and the sulphuric acid contained in the amine sulphate) is pumped to one of two storage tanks – with sulphuric acid mixed in on the suction side until the solution reaches a pH value of 7.
With air quality control requirements of high importance, the plant specified that the Borger Rotary Lobe Pump be set to 8 bar. If the pressure drops below 5 bar, a pressure switch turns off the system.
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